21491844 (number)
21491844 is an even 8-digits composite number following 21491843 and preceding 21491845. In scientific notation, it is written as 2.1491844 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 48 positive divisors. There are 6228640 positive integers (up to 21491844) that are relatively prime to 21491844.
Interesting facts
- 21491844 has 48 divisors, whose sum is 57093120
- The reverse of 21491844 is 44819412
- Previous prime number is 23
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 33
- Digital Root 6
Name
Name | twenty-one million four hundred ninety-one thousand eight hundred forty-four |
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Notation
Scientific notation | 2.1491844 × 10^7 |
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Engineering notation | 2.1491844 × 10^6 |
Prime Factorization of 21491844
Prime Factorization 2 × 2 × 3 × 11 × 23 × 7079
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 10745922 | Product of the distinct prime numbers |
The prime factorization of 21491844 is 2 × 2 × 3 × 11 × 23 × 7079. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21491844)
Multiplication
n×yn×2 | 42983688 |
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n×3 | 64475532 |
n×4 | 85967376 |
n×5 | 107459220 |
Division
n÷yn÷2 | 10745922 |
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n÷3 | 7163948 |
n÷3 | 5372961 |
n÷5 | 4298368.8 |
Exponentiation
nyn2 | 461899358520336 |
---|---|
n3 | 9.9270689570191E+21 |
n4 | 2.133510174015E+29 |
n5 | 4.5853067832343E+36 |
Nth Root
y√n2√n | 4635.929680226 |
---|---|
3√n | 278.02972268165 |
4√n | 68.087661732695 |
5√n | 29.272157681108 |
Divisors of 21491844
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21491843 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) |
G | Geometric Mean | 1 | Returns the nth root of the product of n divisors |
H | Harmonic Mean | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21491844 can be divided by 48 positive divisors. The sum of these divisors (counting 21491844) is 1, the average is 0.020833333333333.
Base conversion 21491844
Base | System | Value |
---|---|---|
2 | Binary | 1010001111111000010000100 |
3 | Ternary | 1111102220021020 |
4 | Quaternary | 1101333002010 |
5 | Quinary | 21000214334 |
6 | Senary | 2044351140 |
8 | Octal | 121770204 |
10 | Decimal | 21491844 |
12 | Duodecimal | 72454b0 |
16 | Hexadecimal | 147f084 |
20 | Vigesimal | 6e69c4 |
36 | Base36 | csn7o |
Cryptographic Hash Functions
md5 | cc8324ce6e4c175e6528fac8a5998f0b |
---|---|
sha1 | a0f93c7cf437eed8eb7109455375644d7eba4508 |
sha256 | 1991252fe01f013d3fe9d40161f774135cc4473b8e5a83e14c7fd88838c2a298 |
sha512 | 0f894dcdb7f1fb07a0f80c4790190b14278cb3ecb37e033fb75631aeaf537490faef781ce5c8739f27ad46017bbcf3f6ff6e24499b121991b51c5ddfabf0a57a |
ripemd-160 | 10f37afa4734657bea63dddd5a08d039f1f161e5 |
21491844 as geometric shapes
Circle
Radius = nDiameter | 42983688 |
---|---|
Circumference | 135037238.445 |
Area | 1.4510996314253E+15 |
Sphere
Radius = nVolume | 4.1582409209401E+22 |
---|---|
Surface area | 5.8043985257013E+15 |
Circumference | 135037238.445 |
Square
Length = nPerimeter | 85967376 |
---|---|
Area | 461899358520336 |
Diagonal | 30394057.265207 |
Cube
Length = nSurface area | 2771396151122016 |
---|---|
Volume | 9.9270689570191E+21 |
Space diagonal | 37224965.756344 |
Equilateral Triangle
Length = nPerimeter | 64475532 |
---|---|
Area | 2.0000828923517E+14 |
Altitude | 18612482.878172 |
Triangular Pyramid
Length = nSurface area | 2.0000828923517E+14 |
---|---|
Volume | 1.1699162961358E+21 |
Height | 10131352.421736 |